I wouldn't use a trailer on an Addict.

While I don't believe it will explode, the simple fact is that on a high-end CF racing frame like that, the designers will stiffen only a few specific areas (e.g. BB) and strip material off of every other part possible. While the dropouts can take it, too much torque on the rear triangle and you're facing a catastrophic failure.

Also, if the trailer does screw up the frame, that's gonna be a costly repair / replacement.

I'm sure someone could make a CF frame that would be good for touring, but if so it's not going to remotely resemble the Addict.

Fortunately, for 15 lbs you don't need a trailer. A seatpost rack and a handlebar bag for good measure will do it.

I would also get the widest tires you can fit and some race-blade fenders.